Home / 4,080.80-6,119.64-1,306.88

Finding the Fourth Proportional to 4,080.80, 6,119.64 and 1,306.88

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Solution

The fourth proportional to 4,080.80, 6,119.64 and 1,306.88 is: 1,959.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,080.80 : 6,119.64 = 1,306.88 : x
  2. Step 2: Convert to fraction form
    4,080.80/6,119.64 = 1,306.88/x
  3. Step 3: Cross multiply
    4,080.80x = 6,119.64 × 1,306.88
  4. Step 4: Simplify right side
    4,080.80x = 7,997,635.12
  5. Step 5: Solve for x
    x = 7,997,635.12/4,080.80
  6. Step 6: Final answer
    x = 1,959.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.